**Side-profile shot against a dark neutral background.
A shirtless adult male with gray hair stands still in profile.
He has correct posture:
head aligned over shoulders,
neck straight,
chest open,
shoulders back,
upper back flat and neutral.
Arms relaxed at his sides.
Camera is fixed.
Lighting is soft and even.
No text, no graphics, no split screen.
Realistic anatomy and natural body proportions.****Side-profile shot against the same dark neutral background.
The same adult male stands in the same position and camera angle.
He now has poor posture:
head pushed forward,
neck bent downward,
shoulders rounded forward,
upper back clearly curved into a hunch.
Arms hang slightly forward due to the posture.
Camera remains fixed.
Lighting remains identical to the first shot.
No text, no graphics, no split screen.
Realistic anatomy and natural body proportions.**